 Endocrinology is a medical subspecialty which deals with diseases of endocrine glands. The endocrine glands that we have are namely the pituitary which is also called the master gland, the thyroid, the parathyroid which maintains the bone metabolism, the adrenal gland which maintains the blood pressure, the pancreas which produces the incident and the gonads which are namely the ovary and the testis. So diseases which we commonly encounter in endocrinology are diabetes, thyroid and parathyroid related disorders, vitamin D deficiency and osteoporosis, sexual disorders, PCO and obesity. What is diabetes? So diabetes is a disorder where the incident production from the pancreas is not enough. So in type 1 diabetes mellitus, the incident production is not at all there because of which we have diabetes. In type 2 diabetes mellitus, the incident production is not enough to keep up with the body requirement which we commonly see in obesity. So diabetes is an asymptomatic disease. So why treat an asymptomatic disease? This is because in short term it weakens our defense mechanism against bacterias and viruses. In long term it blocks the blood supply to vital organs like brain, kidney, heart and retina. Hence diabetes is one of the leading cause of blindness, dialysis and heart attack. So how do you manage it or how do you prevent these problems? That is by keeping our blacketed hemoglobin that is HBONC below 7 percent.